A ladder structure

Abstract

The application discloses a climbing ladder structure applied to a steel column, which comprises a climbing ladder body, a hook part is folded at the upper end of the climbing ladder body along the vertical direction, and the hook part is suitable for being hooked to the top end of the steel column; a first threaded hole is penetrated through the upper end of the climbing ladder body along the first horizontal direction along the vertical direction, and the first horizontal direction is perpendicular to the vertical direction; a first locking bolt is threadedly screwed in the first threaded hole, the first locking bolt has a locking state and an unlocking state, when the first locking bolt is in the locking state, the end of the first locking bolt, which is away from the screw head of the first locking bolt, and the hook part are respectively abutted against and tightly abut against the two side walls of the steel column along the first horizontal direction; when the first locking bolt is in the unlocking state, the end of the first locking bolt, which is away from the screw head of the first locking bolt, is separated from the outer side wall of the steel column. The climbing ladder structure is firmly installed on the steel column without damaging the steel column, and the safety and reliability requirements of climbing operation are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of construction safety protection, in particular to a climbing ladder structure. BACKGROUND

[0002] With the high-quality development of the national construction industry, steel structure buildings have been widely used in recent years due to their uniform material, high reliability, light weight, good plasticity and toughness, etc. In the process of steel structure building construction, in order to carry out construction on different height work surfaces, a climbing hanging ladder is usually hung on a steel column connecting different height work surfaces, and construction personnel climb up and down along the climbing hanging ladder to realize convenient construction on different height work surfaces. However, in the process of use, the steel column is not allowed to be connected with the climbing hanging ladder by welding or hole opening, etc. which destroys the steel structure, resulting in that the connection between the existing climbing hanging ladder and the steel column is easy to lose stability, and the reliability and safety cannot be guaranteed. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the defects in the prior art that the connection between the climbing hanging ladder applied to the steel column and the steel column is easy to lose stability, and the reliability and safety cannot be guaranteed, so as to provide a climbing ladder structure.

[0004] According to the climbing ladder structure provided by the present application, which is applied to be hung on a steel column, the climbing ladder structure comprises:

[0005] A climbing ladder body is folded with a hook portion at the upper end in the vertical direction, and the hook portion is adapted to be hooked at the top end of the steel column; a first threaded hole is penetrated in the first horizontal direction at the upper end of the climbing ladder body in the vertical direction, and the first horizontal direction and the vertical direction are perpendicular to each other;

[0006] A first locking bolt is threadedly connected in the first threaded hole, and the first locking bolt has a locking state and an unlocking state; when the first locking bolt is in the locking state, the end of the first locking bolt away from the screw head abuts against and tightly abuts against the two side walls of the steel column in the first horizontal direction, respectively; when the first locking bolt is in the unlocking state, the end of the first locking bolt away from the screw head is separated from the outer side wall of the steel column.

[0007] According to the climbing ladder structure of the present application, at least the following technical effects are achieved:

[0008] The first threaded hole is arranged at the position corresponding to the hook portion of the upper end side wall of the ladder body along the vertical direction, and the first locking bolt is screwed in the first threaded hole; during the use of the ladder structure assembled on the steel column, the hook portion is first hung on the top of the steel column, and then the first locking bolt is driven to rotate forward in the first threaded hole, so that the first locking bolt moves along the first horizontal direction to approach the steel column, so that the first locking bolt is switched to the locked state, so that the ladder body is stably connected to the steel column under the action of the friction between the one side wall of the steel column and the first locking bolt and the friction between the other side wall of the steel column and the hook portion, thereby realizing the firm installation of the ladder structure on the steel column without damaging the steel column, meeting the safety and reliability requirements of the climbing operation. When it is necessary to disassemble the ladder structure from the steel column, only the first locking bolt is driven to rotate reversely in the first threaded hole, so that the first locking bolt moves along the first horizontal direction away from the steel column, so that the first locking bolt is switched to the unlocked state, and the ladder structure can be disassembled from the steel column as a whole. The whole disassembly process is convenient, easy to turnover and improves the construction efficiency.

[0009] Preferably, the ladder body comprises at least two climbing members which are detachably connected in sequence along the vertical direction.

[0010] Preferably, two connecting portions are arranged on the upper end of the uppermost climbing member along the second horizontal direction and are slidably arranged, the connecting portions are locked by the second locking assembly, the upper end of the connecting portion is folded along the vertical direction to form the hook portion, and the first threaded hole is arranged in the connecting portion; the first horizontal direction, the second horizontal direction and the vertical direction are perpendicular to each other.

[0011] Preferably, the climbing member comprises two side plates which are arranged at intervals along the second horizontal direction, and a plurality of ladder step cross bars are arranged between the two side plates and at equal intervals along the vertical direction.

[0012] Preferably, a first through hole is formed in the connecting portion along the second horizontal direction, and the first through hole is adapted to allow the uppermost ladder step cross bar to pass through along the second horizontal direction; a second threaded hole is formed in the outer side wall of the connecting portion and communicates with the first through hole; the second locking assembly comprises a second locking bolt matched with the second threaded hole; when the connecting portion and the uppermost ladder step cross bar are locked and fixed, the second locking bolt is screwed in the second threaded hole, and the end of the second locking bolt away from the screw head abuts against and presses against the outer side wall of the uppermost ladder step cross bar.

[0013] And / or, the climbing ladder body further comprises a reinforcing piece arranged between two adjacent climbing pieces, a first hook arm is formed by folding an upper end of the reinforcing piece in the vertical direction, and a second hook arm is formed by folding a lower end of the reinforcing piece in the vertical direction, the first hook arm is adapted to be hung on the ladder step cross rod of the climbing piece above, and the second hook arm is adapted to be hung on the ladder step cross rod of the climbing piece below.

[0014] Preferably, the climbing piece further comprises two support pieces, the two support pieces are arranged on one side of the side plate in the first horizontal direction respectively; the support piece is adapted to abut against the outer wall of the steel column on the side away from the side plate in the first horizontal direction.

[0015] Preferably, the lower end of the side plate in the vertical direction overlaps the upper end of the vertically adjacent side plate in the vertical direction in the projection in the second horizontal direction; the overlapping part of the two adjacent side plates is detachably connected by a third locking assembly.

[0016] Preferably, the third locking assembly comprises a first clamping part and a second clamping part arranged separately, the first clamping part and the second clamping part are both formed with a second through hole in the second horizontal direction on both sides in the first horizontal direction; the third locking assembly comprises a third locking bolt and a third nut matched; when the overlapping part of the two adjacent side plates is fixedly connected, the first clamping part and the second clamping part abut against and press on both sides of the overlapping part of the two adjacent side plates in the second horizontal direction respectively, and the third locking bolt passes through the second through hole and rotates the third nut.

[0017] Preferably, the third nut is fixedly connected to the end face of the second clamping part away from the first clamping part in the second horizontal direction, and the threaded hole of the third nut is arranged corresponding to the second through hole.

[0018] Preferably, a fall arrestor is arranged at the upper end of the climbing ladder body in the vertical direction, and the fall arrestor is adapted to be worn by a construction worker.

[0019] And / or, the first locking bolt is provided with an anti-slip part at the end away from the screw head.

[0020] Additional aspects and advantages of the application will be given, partially in the following description, partially will become obvious from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 A schematic view of a vertical structure of a climbing ladder structure of the present embodiment assembled on a box-shaped steel column;

[0023] Figure 2 A schematic view of a part of the structure of the present embodiment; Figure 1

[0024] Figure 3 A schematic view of a climbing ladder structure of the present embodiment;

[0025] Figure 4 A schematic view of an upper structure of the present embodiment; Figure 3

[0026] Figure 5 A schematic view of a middle structure of the present embodiment; Figure 3

[0027] A schematic view of a part of the structure of the present embodiment. Figure 6 Figure 5 Explanation of reference signs:

[0028] 1-steel column;

[0029] 2-connection part, 21-hook part, 22-first through hole, 23-first through hole, 24-second through hole;

[0030] 31-first locking bolt, 311-anti-skid part, 32-second locking bolt, 33-third locking bolt, 34-third nut, 35-first nut, 36-second nut;

[0031] 41-climbing part, 411-side plate, 412-ladder step cross rod, 413-supporting part, 42-reinforcing part, 421-first hook arm, 422-second hook arm, 43-fall arrester;

[0032] 51-first clamping part, 52-second clamping part.

[0033] DETAILED DESCRIPTION

[0034] ​​​​The technical solutions of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0038] As Figures 1 to 4 It is a climbing ladder structure provided by the embodiment, applied to a box type steel column 1, the steel column 1 is arranged along the vertical direction, and connects the working surfaces of different heights of the steel structure building; the climbing ladder structure comprises a climbing ladder body, the upper end of the climbing ladder body is folded in a hook portion 21 along the vertical direction, the hook portion 21 is suitable for hooking in the top end of the steel column 1; the upper end of the climbing ladder body is penetrated by a first threaded hole along a first horizontal direction along the vertical direction; the first threaded hole is threadedly connected with a first locking bolt 31, the first locking bolt 31 has a locking state and an unlocking state, when the first locking bolt 31 is in the locking state, the end of the first locking bolt 31 away from the screw head is abutted and clamped against the outer side wall of the steel column 1, and the hook portion 21 is abutted and clamped against the two side walls of the steel column 1; when the first locking bolt 31 is in the unlocking state, the end of the first locking bolt 31 away from the screw head is separated from the outer side wall of the steel column 1. It can be understood that the first horizontal direction, the second horizontal direction and the vertical direction described in the text refer to the horizontal direction, the vertical direction and the horizontal direction of the steel column 1, respectively. Figure 1The first horizontal direction, the second horizontal direction and the vertical direction are perpendicular to each other, and the first horizontal direction and the second horizontal direction are located on the same horizontal plane.

[0039] In the process of assembling the climbing ladder structure of the embodiment on the steel column 1 for use, the hook part 21 is first hung on the top of the steel column 1, and then the first locking bolt 31 is driven to rotate forward in the first threaded hole, so that the first locking bolt 31 moves along the first horizontal direction to approach the steel column 1, so that the first locking bolt 31 is switched to the locked state, so that the climbing ladder body is stably connected to the steel column 1 under the friction between the outer sidewall of the steel column 1 and the first locking bolt 31 and the friction between the inner sidewall of the steel column 1 and the hook part 21, thereby realizing firm installation of the climbing ladder structure of the embodiment on the steel column 1 without damaging the steel column 1, ensuring the safety of the climbers, and meeting the safety and reliability requirements of the climbing operation of the climbers. When it is necessary to disassemble the climbing ladder structure of the embodiment from the steel column 1, only the first locking bolt 31 is driven to rotate reversely in the first threaded hole, so that the first locking bolt 31 moves away from the steel column 1 along the first horizontal direction, so that the first locking bolt 31 is switched to the unlocked state, and the climbing ladder structure of the embodiment can be disassembled from the steel column 1 as a whole. The whole disassembly process is convenient, easy to turnover and improves the construction efficiency.

[0040] It should be noted that the climbing ladder structure of the embodiment can also be applied to be hung on the H-shaped steel column 1, and when the first locking bolt 31 is in the locked state, the end of the first locking bolt 31 away from the screw head abuts against and tightly abuts against the two sidewalls of the steel column 1 along the first horizontal direction, respectively.

[0041] In order to further increase the friction between the first locking bolt 31 in the locked state and the outer sidewall of the steel column 1, so that the climbing ladder structure of the embodiment is more firmly installed on the steel column 1 without damaging the steel column 1, specifically, the end of the first locking bolt 31 away from the screw head is provided with an anti-skid part 311. More specifically, the cross-sectional area of the anti-skid part 311 perpendicular to the first horizontal direction is greater than the cross-sectional area of the rod part of the first locking bolt 31 perpendicular to the first horizontal direction.

[0042] As Figure 1 and Figure 3As shown in the drawings, in some embodiments of the present application, the climbing ladder body comprises at least two climbing pieces 41 which are detachably connected in sequence along the vertical direction. The corresponding number of climbing pieces 41 can be flexibly selected according to the actual height of the steel column 1 along the vertical direction to adapt to the climbing ladder body with corresponding height, so as to meet different climbing height use requirements and have stronger applicability. It should be noted that the height of the climbing piece 41 at different vertical positions can be the same or different, so as to meet more climbing height use requirements.

[0043] As shown in the drawings, Figures 1 to 4 In some embodiments of the present application, two connecting parts 2 are arranged on the upper end of the uppermost climbing piece 41 along the second horizontal direction, the connecting parts 2 are locked by the second locking assembly, the upper end of the connecting part 2 is folded along the vertical direction to form the hook part 21, and the first threaded hole is arranged on the connecting part 2. First, by adding two connecting parts 2 with hook parts 21, the area of the top of the steel column 1 can be increased, and the stability of the climbing ladder structure of the embodiment mounted on the steel column 1 can be further improved. Secondly, by arranging the connecting part 2 on the climbing ladder body along the second horizontal direction, the distance between the two connecting parts 2 along the second horizontal direction can be flexibly adjusted according to the actual size of the steel column 1 along the second horizontal direction, so as to meet the installation of the climbing ladder structure of the embodiment on the steel column 1 with different sizes along the second horizontal direction, and have stronger applicability.

[0044] In order to facilitate the arrangement of the first threaded hole on the connecting part 2, as shown in the drawings, Figure 2 and Figure 4 Specifically, a first through hole 23 is formed on the connecting part 2 along the first horizontal direction, a first nut 35 is fixedly connected to the connecting part 2 at a position corresponding to the first through hole 23, and a threaded hole in the first nut 35 is arranged as the first threaded hole.

[0045] As shown in the drawings, Figure 1 and Figure 3 In some embodiments of the present application, the climbing piece 41 comprises two side plates 411 arranged at intervals along the second horizontal direction, a plurality of step cross bars 412 are arranged between the two side plates 411, and the plurality of step cross bars 412 are arranged at equal intervals along the vertical direction. The equally spaced step cross bars 412 provide uniform foot space for the construction personnel, so as to facilitate the construction personnel to climb up and down along the climbing ladder structure of the embodiment, and realize convenient construction on different height work surfaces.

[0046] As shown in the drawings, Figure 2 and Figure 4As shown, in some embodiments of the present application, a first through hole 22 is formed through the connecting part 2 in the second horizontal direction, and the first through hole 22 is adapted for the uppermost ladder step cross rod 412 to move through in the second horizontal direction; a second threaded hole is formed through the outer side wall of the connecting part 2 and communicates with the first through hole 22; the second locking assembly comprises a second locking bolt 32 matched with the second threaded hole; when it is necessary to adjust the movement of the connecting part 2 relative to the ladder body in the second horizontal direction, the second locking bolt 32 is only required to be reversely rotated in the second threaded hole, so that the second locking bolt 32 moves away from the ladder step cross rod 412, and the locking force between the connecting part 2 and the uppermost ladder step cross rod 412 is removed; when the connecting part 2 is locked after being adjusted to the required position, the second locking bolt 32 is only required to be forwardly rotated in the second threaded hole, so that the second locking bolt 32 moves close to the ladder step cross rod 412 and abuts against and tightly abuts against the outer side wall of the uppermost ladder step cross rod 412, so that locking and fixing are realized, and the whole adjustment process is convenient to operate.

[0047] In order to facilitate the arrangement of the second threaded hole in the connecting part 2, as shown in Figure 4 Specifically, a second through hole 24 is formed through the connecting part 2 and communicates with the first through hole 22, and a second nut 36 is fixedly connected to the position of the outer side wall of the connecting part 2 corresponding to the second through hole 24, and a threaded hole in the second nut 36 is arranged as the second threaded hole.

[0048] As shown in Figure 1 , Figure 3 , Figure 5 and Figure 6 In some embodiments of the present application, the ladder body further comprises a reinforcing part 42 arranged between two adjacent ladder parts 41, the reinforcing part 42 is folded at the upper end in the vertical direction to form a first hook arm 421, and is folded at the lower end in the vertical direction to form a second hook arm 422, the first hook arm 421 is adapted for being hung on the ladder step cross rod 412 of the upper ladder part 41, and the second hook arm 422 is adapted for being hung on the ladder step cross rod 412 of the lower ladder part 41. The reinforcing part 42 with the first hook arm 421 and the second hook arm 422 provides another connecting line between the two adjacent ladder parts 41, so that even if the detachable connection between the two adjacent ladder parts 41 is loose, the two adjacent ladder parts 41 will not be separated from each other due to the gravity of the construction personnel climbing up and down, and the safety of the construction personnel climbing is ensured.

[0049] As shown in Figure 1 and Figure 2As shown in the drawings, in some embodiments of the present application, the climbing member 41 further comprises two support members 413, and the two support members 413 are respectively arranged on one side of the side plate 411 along the first horizontal direction; the support member 413 is adapted to abut against the outer side wall of the steel column 1 on the side of the side plate 411 away from the steel column 1 along the first horizontal direction. The side plate 411 and the ladder step cross rod 412 are spaced apart from the outer side wall of the steel column 1 along the first horizontal direction by the support member 413, so that the construction personnel can step on the ladder step cross rod 412 to climb up and down. Specifically, the support member 413 is connected with the steel column 1 by a hoop, which connects the climbing ladder body and the steel column 1 more firmly and effectively prevents the climbing ladder body from sliding or losing stability.

[0050] As shown in the drawings, Figure 5 and Figure 6 As shown in the drawings, in some embodiments of the present application, the lower end of the side plate 411 along the vertical direction overlaps with the projection of the upper end of the vertically adjacent side plate 411 along the second horizontal direction; the overlapping part of the two adjacent side plates 411 is detachably connected by a third locking assembly. The lower end of the side plate 411 of the upper climbing member 41 overlaps with the upper end of the side plate 411 of the adjacent and lower climbing member 41, and they are integrally connected by the third locking assembly, which is more firm in connection.

[0051] As shown in the drawings, Figure 5 and Figure 6As shown, in some embodiments of the present invention, the third locking assembly includes a first clamping part 51 and a second clamping part 52 that are separately arranged. The first clamping part 51 and the second clamping part 52 each have a second through hole formed along the second horizontal direction on both sides of the first horizontal direction. The third locking assembly includes a matching third locking bolt 33 and a third nut 34. In the process of assembling two adjacent climbing components 41 into a single unit for use, firstly, the lower and upper sides of two vertically adjacent side plates 411 are overlapped. Then, the first clamping part 51 and the second clamping part 52 are respectively abutted and tightened against both sides of the overlap of the two vertically adjacent side plates 411 along the second horizontal direction. Finally, the third locking bolt 33 is passed through the first clamping part 51. By tightening the second through hole of the clamping part 51 and the second clamping part 52 and screwing in the third nut 34, the friction between the first clamping part 51 and the outer wall of the upper side plate 411 and the friction between the second clamping part 52 and the outer wall of the lower side plate 411 can be used to lock and fix the two vertically adjacent side plates 411 into one piece. When the two adjacent climbing parts 41 are separated, simply unscrew the third locking bolt 33 from the third nut 34 to remove the pressing pressure of the first clamping part 51 on the outer wall of the upper side plate 411 and the pressing pressure of the second clamping part 52 on the outer wall of the lower side plate 411, so as to quickly separate the two climbing parts 41. The entire disassembly and assembly process is convenient to operate. As an alternative embodiment, a third threaded hole is formed through the overlap of two vertically adjacent side plates 411 along the second horizontal direction. The third locking assembly includes a third locking bolt 33 that matches the third threaded hole. When the two vertically adjacent side plates 411 are fixedly connected, the third locking bolt 33 is screwed into the third threaded hole at the overlap of the two adjacent side plates 411.

[0052] To further simplify the disassembly and assembly of two adjacent climbing components 41 and improve the efficiency of disassembly and assembly, in some embodiments of the present invention, the third nut 34 is fixedly connected to the end face of the second clamping part 52 facing away from the first clamping part 51 along the second horizontal direction, and the threaded hole of the third nut 34 is provided corresponding to the second through hole.

[0053] like Figures 1 to 4 As shown, in some embodiments of the present invention, a fall arrestor 43 is provided at the upper vertical end of the climbing ladder. The fall arrestor 43 is suitable for construction workers to wear to prevent them from falling while climbing up and down the climbing ladder, thus ensuring their safety when climbing.

[0054] Obviously, the above embodiments are merely example for clearly illustrating but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and can not be enumerated. The obvious changes or variations derived from the above description are still within the protection scope of the present application.

Claims

1. A ladder structure for use suspended on a steel column (1), characterized in that, The ladder structure includes: The climbing ladder has a hook (21) folded up at the upper vertical end, which is suitable for hooking onto the top of the steel column (1); the climbing ladder has a first threaded hole through it in the first horizontal direction at the upper vertical end, and the first horizontal direction is perpendicular to the vertical direction. The first locking bolt (31) is threaded into the first threaded hole. The first locking bolt (31) has a locked state and an unlocked state. When the first locking bolt (31) is in the locked state, the end of the first locking bolt (31) away from its screw head and the hook (21) respectively abut against the two side walls of the steel column (1) along the first horizontal direction. When the first locking bolt (31) is in the unlocked state, the end of the first locking bolt (31) away from its screw head is separated from the outer side wall of the steel column (1). The climbing ladder includes at least two climbing components (41) that are detachably connected in a vertical direction; the climbing component (41) includes two side plates (411) arranged at intervals in a second horizontal direction, and a plurality of step crossbars (412) are provided between the two side plates (411), and the plurality of step crossbars (412) are arranged at equal intervals in a vertical direction. The uppermost climbing member (41) has two connecting parts (2) that slide along the second horizontal direction. The connecting parts (2) are locked by the second locking assembly. The first horizontal direction, the second horizontal direction and the vertical direction are perpendicular to each other. A first through hole (22) is formed through the connecting part (2) along the second horizontal direction. The first through hole (22) is adapted to allow the uppermost step crossbar (412) to move through along the second horizontal direction. A second threaded hole is provided through the outer wall of the connecting part (2). The second threaded hole is connected to the first through hole (22). The second locking assembly includes a second locking bolt (32) that matches the second threaded hole. When the connecting part (2) is locked and fixed to the uppermost step crossbar (412), the second locking bolt (32) is threaded into the second threaded hole, and the end of the second locking bolt (32) away from its thread head abuts and presses against the outer wall of the uppermost step crossbar (412). The height of the first through hole (22) is greater than the diameter of the step crossbar (412).

2. The ladder structure according to claim 1, characterized in that, The connecting part (2) is folded up vertically to form the hook part (21), and the first threaded hole is provided in the connecting part (2).

3. The ladder structure according to claim 2, characterized in that, The climbing ladder also includes a reinforcing member (42) disposed between two adjacent climbing members (41). The reinforcing member (42) is folded up vertically to form a first hook arm (421) and folded down vertically to form a second hook arm (422). The first hook arm (421) is adapted to be attached to the step bar (412) of the climbing member (41) located above, and the second hook arm (422) is adapted to be attached to the step bar (412) of the climbing member (41) located below.

4. A ladder structure according to claim 2 or 3, characterized in that, The climbing member (41) also includes two support members (413), which are respectively disposed on one side of the two side plates (411) along the first horizontal direction; the side of the support member (413) away from the side plate (411) along the first horizontal direction is adapted to abut against the outer wall of the steel column (1).

5. A ladder structure according to claim 4, characterized in that, The lower vertical end of the side plate (411) overlaps with the upper vertical end of the adjacent side plate (411) along the second horizontal direction; the overlapping part of the two adjacent side plates (411) is detachably connected by a third locking assembly.

6. A ladder structure according to claim 5, characterized in that, The third locking assembly includes a first clamping part (51) and a second clamping part (52) that are separately arranged. The first clamping part (51) and the second clamping part (52) are both formed with second through holes along the second horizontal direction on both sides of the first horizontal direction. The third locking assembly includes a matching third locking bolt (33) and a third nut (34). When the overlapping part of two adjacent side plates (411) is fixedly connected, the first clamping part (51) and the second clamping part (52) respectively abut against and press against the overlapping part of the two adjacent side plates (411) on both sides of the second horizontal direction, and the third locking bolt (33) passes through the second through hole and tightens the third nut (34).

7. A ladder structure according to claim 6, characterized in that, The third nut (34) is fixedly connected to the end face of the second clamping part (52) facing away from the first clamping part (51) in the second horizontal direction, and the threaded hole of the third nut (34) is provided corresponding to the second through hole.

8. A ladder structure according to claim 1, characterized in that, The climbing ladder is equipped with a fall arrestor (43) at the upper vertical end, and the fall arrestor (43) is suitable for construction workers to wear; And / or, the first locking bolt (31) is provided with an anti-slip part (311) at the end opposite to its screw head.

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